Revetment-mattress.



C. G. GONDIE.

REVETMENT MATTRESS. APPLICATION HLBD Nov. 9, 19104 Patented Jan. 31,1911.

CHRISTOPHER C. CONDIE, 0F MEMPHIS, TENNESSEE.

REVETMENT-MATTRESS.

ceases.

Specication'of Letters Patent.

Application led November 9, 1910. Serial No. 591,437.

To all whom it may concern.'

Be it knoWn that I, CHRISTOPHER C. CON- nm, a citizen of the UnitedStates, and a resident of Memphis, in the county of Shelby and State ofTennessee, have invented certain new and useful Improvements in Re-\f'etmentl\/Iattresses, of which the following is a specification.

This invention is an improvement in revetment mattresses such, forinstance, as is illustrated in my former application for Patent No.566,315 filed June 11, 1910, the mattress being designed for use forrevetment purposes, especially in connection with the protection of thebottom and sides and the caving banks of rivers such as the Mississippi.1

The present invention has for an object to provide certain means forreinforcing and strengthening-the mattress in such manner as to preventtearing of the covers employed for retaining the concrete vmass,together with means for facilitating the u nrolling of a mattress whenWound in roll form and also means for anchoring a revetment mattress ona bank to overcome the tendency to slip down the bank in the use of themattress.

The invention consists in certain novel' constructions and combinationsof parts as Will be hereinafter described and claimed.

In the drawing Figure 1 is a perspective view of the invention as in useon a bank, parts being broken away and others shoyvn in section. Fig. 2is a detail perspectlve View, parts being removed and others shown insection, illustrating the specific construction of the mattress. Fig.v 3is a cross section of the mattress.

In constructing the mattress, ordinarily I employ cementitious matter Abetyveen tyvo opposite coverings B which coverlngs may be of anysuitable cloth or other textile material and the filling may includecement mixed with broken stone or other suitable material to form aconcrete.

It is found in practice that the concrete is very heavy and there is adanger at times, when the mattress is Wound 1n the form of a roll, ofthe Wet cement tearing the cloth.

To avoid this, I use a reinforcement in the form of a net C which may beof rope net or other suitable materia-land is designed to be rolled upwith the mattress and to operate to take the strain of the wet concretematerial from the cloth and thus relieve the cloth of the danger ofbreakage. The net may be .commensurate in length and Width with themattress to which it is to be applied and by preference a rope C isconnected With the inner end of the net When Wound into the mattress sothat by pulling on the rope the mattress may be unrolled for use. Thenet thus operates to overcome the danger of tearing the covers and alsocooperates in the unwinding of the roll for use. In practice it is alsofound that when a mattress is placed on a steep bank es ecially underWater, there is 'a' tendency or the mattress to slip down because of theWeight. I seek to avoid this by providing an anchorage means whichcomprises longitudinal strands D, preferably Wire, laid into thc bodyofthe concrete before the top cover B is put on and on these Wires D Iplace cross strips or clogs E at intervals, which clogs may be securedto the strands D in any. suitable manner and may be of metal or Wood aspreferred. These clogs tend to prevent any displacement of the concretematerial longitudinally of the mattress and also prevent any creeping ofthe mattress alongthe longitudinal strands D and the strands D areextended at D at the upper end of the mattress and may be tied oranchored to points on the shore either by securing the strands to treesor stumps or by driving anchorage stakes or otherwise, as may be mostconvenient to the special locality in which the mattress is to be used.

By the novel construction described, I provide for reinforcing themattress in such manner as to prevent its breakin through the coversandthus increase its e ciency, I facilitate the handling of the mattressby providing means to aid in unrolling the same and I also provide meansfor the convenient anchorage of themattress in position so it will nottend to slip down a steep bank, when applied'thereto.

In my former application No. 566,315 before referred to, the fillingincludes specifi cally concrete in dry form,ewhile in the presentconstruction, the filling is specifically a w'et concrete, rendering themattress quite heavy and making, it desirable in the actual use of theinvention to employ reinforcing means shown and 'before described.

I claim:

1. A revetment mattress comprising alling impregnated or combined withcementitious matter,deovers above and below the same, a net adapted' tobe rolled with the Patented rJ an. 31, 1911.

Vmattress and having an unwinding rope at one end, anchorage Wiresextending longitudinally through the mattress and projecting at one endbeyond the same and transverse clogs on the anchorage Wires Within themattress, all snbstantialbT as and for the purposes set forth.

2. A revetment mattress comprising ailling impregnated or combined withcementitions matter, covers above and below the lling and adapted to beWound with the latter into the form of a roll and a reinforcing netvvounclvvith the mattress.

3. A revetment mattress comprising a illing impregnated or combined Withcementitious matter, covers above and below` the same and areinforcement extending approximately throughout the area of themattress and having at one end an unwinding rope.

pregnated or combined with cementitious matter, means for retaining thelling and anchorage strands extending longitudinally through the fillingand projecting at one `end beyond the mattress.

5. A revetment mattress comprising a lling impregnated or combinedWithcementitions matter, means for retaining the lling and strandsextending longitudinally through the filling' and provided with transverse clogs Within the iilling.

6. Arevetment mattress 1n roll form and comprising a filling impregnatedor cornbined with cementitious matter, means :for

retaining the filling and a reinforcing net Wound with the mattress andadapted to re inforce the means for retaining the illin CHRISTOPHER C.CONDI. Witnesses: x

HOWRD Bussnuin,

ED. G. BELL.

